name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

permissions:
  contents: read

jobs:
  test:
    name: Test
    runs-on: docker
    container:
      image: docker.io/library/golang:1.25
    steps:
      - uses: actions/checkout@v4

      - name: Run tests
        run: go test -v -race -count=1 ./...

  build:
    name: Build
    runs-on: docker
    container:
      image: docker.io/library/golang:1.25
    strategy:
      matrix:
        goos: [linux, darwin, windows]
        goarch: [amd64, arm64]
    steps:
      - uses: actions/checkout@v4

      - name: Build
        env:
          GOOS: ${{ matrix.goos }}
          GOARCH: ${{ matrix.goarch }}
        run: go build -o unarr ./cmd/unarr/

  lint:
    name: Lint
    runs-on: docker
    container:
      image: docker.io/library/golang:1.25
    steps:
      - uses: actions/checkout@v4

      - name: Install golangci-lint
        run: |
          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/v2.11.4/install.sh \
            | sh -s -- -b /usr/local/bin v2.11.4

      - name: Run golangci-lint
        run: golangci-lint run ./...

  coverage:
    name: Coverage
    runs-on: docker
    container:
      image: docker.io/library/golang:1.25
    steps:
      - uses: actions/checkout@v4

      - name: Install python3
        run: apt-get update && apt-get install -y --no-install-recommends python3

      - name: Run tests with coverage (all packages)
        run: |
          go test -race -coverprofile=coverage.out -covermode=atomic \
            ./internal/engine/... \
            ./internal/agent/... \
            ./internal/cmd/...

      - name: Check coverage threshold (engine + agent)
        run: |
          # Threshold applies only to engine and agent — cmd contains interactive UI
          # commands (config menus, daemon, auth browser) that are not unit-testable.
          go test -race -coverprofile=coverage-core.out -covermode=atomic \
            ./internal/engine/... \
            ./internal/agent/...
          COVERAGE=$(go tool cover -func=coverage-core.out | grep ^total | awk '{print $3}' | tr -d '%')
          echo "Coverage on engine+agent: ${COVERAGE}%"
          python3 -c "
          coverage = float('${COVERAGE}')
          threshold = 50.0
          print(f'Coverage: {coverage:.1f}% (threshold: {threshold}%)')
          if coverage < threshold:
              print(f'ERROR: Coverage {coverage:.1f}% is below minimum {threshold}%')
              exit(1)
          else:
              print('OK: Coverage meets minimum threshold')
          "

  vet:
    name: Vet
    runs-on: docker
    container:
      image: docker.io/library/golang:1.25
    steps:
      - uses: actions/checkout@v4

      - name: Run go vet
        run: go vet ./...